Ore-crusher.



No. 655,3". Patented Au 7, I900.

T. SMITH.

one cnusnsn.

(Application filed Oct. 5, 1899.)

(No lldde'l.)

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NrTan STATES PATENT OFFICE.

THOMAS SMITH, OF HOPEIVELL TERRITORY OF NEW MEXICO, ASSIGNOR OF ONE-HALF TO EUGENE G. E. JAOOARD AND ARTHUR O. SWEET, OF

KANSAS CITY, MISSOURI.

ORE-CRUSHER.

$PECIFICATION forming part of Letters Patent No. 655,311, dated August 7, 1900.

Application filed October 5, 1899. Serial No. 732,672. (No model.)

To aZZ whom it may concern.- I

Be it known that I, THOMAS SMITH, a citizen of the United States, residing at Hopewell, in the county of Rio Arriba, Territory of New Mexico, have invented certain new and useful Improvements in Ore-Crushers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Myinvention relates to jaw-crushers for ore. These have heretofore been made with one stationary and one movable jaw, the movable jaw being pivoted as a bell-crank lever and the power applied to the long arm of the bellcrank lever by means of a crank pin or axle, the power applied, as well as the resistance of the rock, being sustained by the pivot.

The objects of my invention are to relieve the pivots of the crusher-jaws of any unnecessary strain over that required to crush the rock caused by leverage, to make a crusher which will crush the rock and make a finished product of from ten to sixty mesh fine at one operation, which will not be afiected by heat, which can be used in connection with a desulfurizing or oxidizing furnace to crush and pulverize rock or ore at high temperature between the different chambers, to reduce the power required to operate, and to cheapen the first cost of manufacture and cost of repairs.

4 To these ends the invention consists in the novel construction and combination of parts hereinafter more fully described and claimed, and illustrated in the accompanying drawings, showing the preferred form of my invention, and in which- Figure 1 is a section through my improved crusher on line 1 1, Fig. 3. Fig. 2 is an elevation of the crusher-frame, and Fig. 3 is a top plan view of the crusher.

Referring to said figures by letters of reference, A A are the side pieces forming the frame, and each is provided near its ends with adjustable boxes B, in which the pivots or necks O of the crushers O are mounted. These crushers are each provided in the lower portion of their inner ends with a transverselyextending semicircular recess D, the upper portion of said ends diverging from each other and forming a wedge-shaped jaw D, opening into a suitable hopper E. End plates, as E, are detachably secured to the sides of one of the crushers at its jaw portion,and these plates serve to prevent lateral movement from the jaw D of the material fed thereto.

Mounted within the substantially-circular recess formed by the adjacent ends of the ing the eccentric to revolve therewith. This motion of the eccentric will cause the crushers to move up and down therewith, which movement, with the longitudinal back-andforward motion of the shaft G and its boxes H, will permit the eccentric to remain centrally of the recesses D at all times. The crushers, which are thus rocked upon their pivots, will crush the ore within the jaw D, and such ore will then sift down upon the eccentric F and between the rollers, where it will be pulverized and delivered from the lower opening between the crushers as a finished product.

The throw of the eccentric is so small that the bottom opening between the crushers will never become of sufficient width to permit the displacement of the rollers F therethrough. These rollers cannot be removed except by removing one of the end plates E and inserting them from the side.

In the foregoing description I have shown the preferred form of myinvention; but I do not limit myself thereto, as I am aware that modifications may be made therein without departing from the spirit of my invention,

and means within said recesses for operatin g the crushers, substantially as set forth.

2. In a crushing-machine, the combination with a frame, of two pivoted and horizontallyadjustable crushers recessed in their adjacent ends, and means within the recesses for supporting and operating the crushers, substantially as described.

3. In a crushing-machine, the combination with a frame, of two pivoted crushers each provided with a recess at its inner end, and an eccentric mounted, and revoluble within, the recesses in said ends, and adapted to support and operate the crushers, substantially as described.

4. In a crushing-machine, the combination with a frame, of crushers each having a semicircular recess in its inner end, an eccentric mounted in said recesses, and rolls interposed between the eccentric and the walls of the recess, for the purpose described.

5. In a crushing-machine, the combination with the frame, of pivoted crushers, each crusherhaving a recess in its inner end, an eccentric mounted in said recesses, and a longitudinally-movable shaft secured to the eccentric, substantially as described.

6. In a crushing-machine, the combination with a frame, of crushers pivoted thereto at their outer ends, each having a semicircular recess in its inner end, an eccentric within said recesses, rollers interposed between the eccentric and the walls of the recesses, and a shaft secured to said eccentric and mounted in longitudinally-movable boxes, within the frame, whereby a rocking motion may be imparted t0 the crushers from the eccentric, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

THOMAS SMITH.

Vitnesses:

EUGENE G. E; JACOARD, ARTHUR 0. SWEET. 

